I figured out the Mario Bros. theme song on my cell phone. Figured it out all by myself during a long day at work. It goes like this:
Now, it isn't perfect, because there isn't a full range of tones on a cell phone, but if you set your key tones to either piano or xylophone, it should work. Admittedly, this is kind of sad, but what else am I going to do for eight hours? Save the world?